diff --git a/Makefile b/Makefile
index ae07c704ba6f..7b3080423b8a 100644
--- a/Makefile
+++ b/Makefile
@@ -388,7 +388,7 @@ PYTHON		= python
 CHECK		= sparse
 
 CHECKFLAGS     := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
-		  -Wbitwise -Wno-return-void $(CF)
+		  -Wbitwise -Wno-return-void -Wno-unknown-attribute $(CF)
 NOSTDINC_FLAGS  =
 CFLAGS_MODULE   =
 AFLAGS_MODULE   =